Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
thuc van » thuc vat, thuc dan, thuc va
cam thuc » am thuc, nam thuc, cam thu
hanh de » hanh ve, hanh kem
hoi hoi » hoi hoc, hoc hoi, hoi doi
hieu ve » hieu va, hieu van
anh de » anh d, anh ve, anh du
pu xac » su xac
xac ky » cac ky, sac ky, bac ky
ho hoi » hoc hoi, hoa hoi, co hoi
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: pu xac ky nang ((ho hoi) or (hoi hoi)). hieu ve cam thuc van ((anh de) OR (hanh de)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: pu xac ky nang ((ho hoi) OR (hoi hoi)). hieu ve cam thuc van ((anh de) OR (hanh de)) va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "pu xac ky nang ((ho hoi) or (hoi hoi)). hieu ve cam thuc van ((anh de) OR (hanh de)) va triet*".